Circle confirms Sept. 16 Arc launch as BlackRock, Visa join validator group
Circle has announced that its Arc blockchain will launch on the public mainnet on Sept. 16, with BlackRock, DTCC, Mastercard, Visa, Standard Chartered, and other global financial institutions serving as founding validators. According to Circle, Arc is currently running on a private mainnet with more than 100 institutional and ecosystem participants, ahead of its public mainnet launch scheduled for Sept. 16. The company said BlackRock, The Depository Trust & Clearing Corporation (DTCC), Galaxy, Global Payments, ICE, Mastercard, MoneyGram, SBI Group, Standard Chartered, Sumitomo Corporation and Visa will join Circle as the networks founding validators, helping secure and govern the blockchain from launch. Arc launches with financial institutions as validators Circle said the validator model is designed around institutions that are also building on the network rather than relying on independent operators. According to the company, the structure is intended to meet the operational, compliance and security requirements expected of financial market infrastructure while supporting open blockchain applications. The announcement also confirms that Arc has moved into a private mainnet phase after earlier operating through a public testnet. Circle had previously said more than 100 organizations, including banks, asset managers and blockchain companies, were testing the network before launch. Mastercard Chief Product Officer Jorn Lambert said the









